Unravelling the Complexity of Lignosulfonates─Fractionation and Physicochemical Profiling.

− However, the relationship between the phenolic hydroxyl content and molecular weight for fractionated samples is more disputed. Some authors report an increasing trend, , while others observe a decreasing trend. , In general, the variations between fractions are small, but some authors hypothesize that in larger molecular weight samples, a decrease in phenolic hydroxyl groups may result from cross-linking.

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